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This Class 1 Sound Level Meter (including attached PRMLXT1 preamplifier and ADP005 18pF input adapter) was calibrated with a
reference 1kHz sine wave. The instrument's 1000.0 Hz filter response was then electrically tested using a 137.00 dBSPL sinewave
at selected frequencies as specified in IEC 61260-am1 (2001-09).
10.00
0.00
-10.00
-20.00
-30.00
-40.00
-50.00
-60.00
-70.00
-80.00
-90.00
-100.00
100
Freq
Measured
(Hz)
(dB)
185.46
-90.61
327.48
-82.27
531.43
-68.01
772.57
-75.25
891.25
-2.50
919.58
-0.29
947.19
0.01
974.02
-0.00
1000.00
0.00
A-18
Sound Level Meter Model: LxT Serial Number: 0000033
Certificate of 1000.0 Hz Third Octave Filter Shape
Frequency (Hz)
Uncert
Limits
(dB)
(dB)
0.10
-70.00, -inf
0.10
-61.00, -inf
0.10
-42.00, -inf
0.10
-17.50, -inf
0.10
-2.00, -5.00
0.10
+0.30, -1.30
0.10
+0.30, -0.60
0.10
+0.30, -0.40
0.10
+0.30, -0.30
Tab. A-17: Filterkurve Terzfilter bei 1 kHz.
1000
Freq
Measured
Uncert
(Hz)
(dB)
(dB)
1026.67
-0.00
0.10
1055.75
0.00
0.10
1087.46
-0.14
0.10
1122.02
-2.56
0.10
1294.37
-93.15
0.10
1881.73
-97.63
0.10
3053.65
-96.71
0.10
5391.95
-97.53
0.10
10000
Limits
(dB)
+0.30, -0.40
+0.30, -0.60
+0.30, -1.30
-2.00, -5.00
-17.50, -inf
-42.00, -inf
-61.00, -inf
-70.00, -inf
Handbuch LxT
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